Hello

It is difficult to identify which grassy weed you have from these pictures.

This may be nimblewell. There are selective herbicides to control it. They are best applied by a professional who holds a Registered Use Pesticide license.

This article describes the plant and what to use for control, and the best time of yer to control it.

https://turf.purdue.edu/nimblewill/?TSPD_101_R0=08993c5290ab<personal data hidden>320757963c3eeaf0ae63e8e9289f371731a82cd763ccb3fe4906ee2ee085559c0c<personal data hidden>bbceec5147c9a20378bb072cc64bfe86bf17dbe230b989423d16f20f21f56e336b59e3a5894dc49719c569f033bfe

This might be creeping bentgrass. It can be controlled by applying the selective herbicide mesotrione. Identification and control options are shown here- https://hort.extension.wisc.edu/articles/perennial-grass-weeds-in-lawns/

You may submit a sod sample to MSU Plant Diagnostic lab so the weed can be positively identified. Find the submission form, instructions, and fee schedule at their website. https://www.canr.msu.edu/pestid/

Positive ID take good magnification pf the tiny auricles, ligule, and collar. If some of this weed has flowered, that can help identify it, since different grasses have different seed heads. This explains these details- https://www.canr.msu.edu/news/grass-photography-tips-for-id-help-us-help-you

My best estimate based on your pictures is creeping bentgrass.